Men Extension Travel Backpack 17 inch Business Laptop Bag Multi-Layer 39L Large Capacity Waterproof Teenage school Backpack

Product Name: Laptop Backpack
Material: Oxford cloth (waterproof)
Function: business, work, travel, shopping
Size: 44 * 30 * 16CM
Weight: about 1.3KG
Features: Can be expanded into a 39L capacity (20 inches), which can be installed in a 17-inch notebook computer
USB charging interface, lightweight design, honeycomb back pad
Trolley case fixing strap, back anti-theft bag
180 degree opening method, separate laptop bag
Wet and dry separation zone, mobile phone and IPAD bag
Shoulder strap hidden card pocket, high density waterproof
Breathable and lightweight design